Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

NPA: 931 [Rate centres in NPA 931] [Dial plan for NPA 931]

NXX: 475

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
931-475 A Lawrenceburg TN NSVLTNMT83Z  525E ONVOY, LLC - TN 470   2026-03-20   
931-475 0 Lawrenceburg TN NSVLTNMT83Z  525E ONVOY, LLC - TN 470   2026-03-20   
931-475 1 Lawrenceburg TN   525E ONVOY, LLC - TN 470   2026-10-08   

Last updated: Sat, 10 Oct 2026 15:24:20 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.